Scientific name: Bulbophyllum dasystachys J.J. Verm.
English name:
Vietnamese name: Cầu diệp vàng
Other name:

Short creeping or clustering trunk or branch epiphyte. Rhizome rigid, semi-woody, 2–3 mm in diam., with close pseudobulbs, touching each other. Pseudobulbs green, broadly ovoid to ovoid oblate, (0.8)1–1.2(1.5) cm in diam., 0.8–1(1.2) cm tall. Leaf obscurely petiolate; leaf blade coriaceous, narrowly oblanceolate, 8–12 cm long, 1.5–2.2 cm wide, tapering into terete, shallowly grooved petiole-like base. Inflorescence erect or somewhat patent, long stalked, lax, many flowered secund raceme to 60 cm tall; peduncle to 40 cm long, straight, light greenish, with few small sterile papyraceous scales at the base, naked above; rachis to 20 cm long, densely papillose, apically slightly curved, with few flowers opening simultaneously. Floral bracts papillose, brownish, narrowly triangular, acuminate, (5)6–7 mm long, 0.8-1.2 mm wide. Pedicel and ovary 2-4 mm long, terete, densely papillose. Flowers spirally arranged, nodding, turned on one side, widely opening, 5-6 mm across. Sepals subsimilar, olive-brown to dark brown, densely hairy with long soft hairs, spreading, narrowly triangular-ovate, obtuse, 2.5-3 mm long, 1.8-2 mm wide. Petals triangular narrowly ovate, obtuse, green to brownish, 0.8-1 mm long, 0.5-0.6 mm wide, ciliate at apex. Lip dull brown-purple with greenish glabrous spot on epichile, fleshy, narrowly oblong obovate, 1.8-2 mm long, 1-1.2 mm wide, recurved near the base, rounded at apex, hirsute, long ciliate along the margin, at the base with 2 down directed, triangular dents. Column light greenish, shortly cylindric, 1.5-1.6 mm tall, with large, forward curved, subulate, apically swollen white stelidia 0.8-1 mm long; operculum yellow, hemispheric, finely papillose, 0.5-0.6 mm in diam.

Habitat, phenology and conservation status.

Creeping branch epiphyte. Primary broad-leaved evergreen submontane forests. (700)1000–1200 m. Fl. March, November – January. Very rare.

Tentatively estimated

IUCN Red List status – DD

Distribution.

Vietnam: Dak Lak (Chu Yang Sing Mountains), Khanh Hoa (Hon Ba Mountains) and Lam Dong (Bidoup Mountains; Dalat City area; Dam Rong district) provinces. Thailand.

Short creeping or clustering trunk or branch epiphyte. Rhizome rigid, semi-woody, 2–3 mm in diam., with close pseudobulbs, touching each other. Pseudobulbs green, broadly ovoid to ovoid oblate, (0.8)1–1.2(1.5) cm in diam., 0.8–1(1.2) cm tall. Leaf obscurely petiolate; leaf blade coriaceous, narrowly oblanceolate, 8–12 cm long, 1.5–2.2 cm wide, tapering into terete, shallowly grooved petiole-like base. Inflorescence erect or somewhat patent, long stalked, lax, many flowered secund raceme to 60 cm tall; peduncle to 40 cm long, straight, light greenish, with few small sterile papyraceous scales at the base, naked above; rachis to 20 cm long, densely papillose, apically slightly curved, with few flowers opening simultaneously. Floral bracts papillose, brownish, narrowly triangular, acuminate, (5)6–7 mm long, 0.8-1.2 mm wide. Pedicel and ovary 2-4 mm long, terete, densely papillose. Flowers spirally arranged, nodding, turned on one side, widely opening, 5-6 mm across. Sepals subsimilar, olive-brown to dark brown, densely hairy with long soft hairs, spreading, narrowly triangular-ovate, obtuse, 2.5-3 mm long, 1.8-2 mm wide. Petals triangular narrowly ovate, obtuse, green to brownish, 0.8-1 mm long, 0.5-0.6 mm wide, ciliate at apex. Lip dull brown-purple with greenish glabrous spot on epichile, fleshy, narrowly oblong obovate, 1.8-2 mm long, 1-1.2 mm wide, recurved near the base, rounded at apex, hirsute, long ciliate along the margin, at the base with 2 down directed, triangular dents. Column light greenish, shortly cylindric, 1.5-1.6 mm tall, with large, forward curved, subulate, apically swollen white stelidia 0.8-1 mm long; operculum yellow, hemispheric, finely papillose, 0.5-0.6 mm in diam.

Habitat, phenology and conservation status

Creeping branch epiphyte. Primary broad-leaved evergreen submontane forests. (700)1000–1200 m. Fl. March, November – January. Very rare.

Tentatively estimated

IUCN Red List status – DD.

Distribution. Vietnam: Dak Lak (Chu Yang Sing Mountains), Khanh Hoa (Hon Ba Mountains) and Lam Dong (Bidoup Mountains; Dalat City area; Dam Rong district) provinces.

Thailand.